Nice preamp tube for hi-fi
Nice current production 12AX7 variant. Nice smooth midrange and solid bass reproduction. At first I thought the highs were a bit soft, but either my ears have adjusted, or they needed a few hours to settle in because the highs are sounding very sweet to me now. Very good dimensionality and soundstaging. I feel these are a bargain at their price for use in high end hi-fi systems. Very happy indeed.